System.Net.WebException -- The underlying connection was closed: An unexpected error occurred on a send.

Source
Microsoft.UpdateServices.Administration

Stack Trace:
at Microsoft.UpdateServices.Administration.AdminProxy.CreateUpdateServer(Object[] args)
at Microsoft.UpdateServices.UI.SnapIn.Scope.ServerSummaryScopeNode.GetUpdateServer(PersistedServerSettings settings)
at Microsoft.UpdateServices.UI.SnapIn.Scope.ServerSummaryScopeNode.ConnectToServer()
at Microsoft.UpdateServices.UI.SnapIn.Scope.ServerSummaryScopeNode.get_ServerTools()